E-Planet 2013 Visit at UERJ

This page provides a summary of the visit program of CernVM at UERJ in the framework of the EU E-Planet program. The visit took place in Oktober/November 2013. Our main contacts at UERJ were Alberto Santoro and his group of Computing Scientists/Engineers, led by José Afonso Sanches and Eduardo Revoredo.

Program: HEP Data Processing in the Cloud

The program of lectures and exercises is focused on the effective use of cloud resources for processing HEP data. From a physicist's perspective, this includes instantiating, contextualizing, and coordinating a set of virtual machines (a "virtual analysis facility") that processes a given data set. For a virtual organization and the infrastructure service provider, hands-on sessions on CernVM, and CernVM-FS have are performed. The program builds on the previous work done together with CernVM project member Artem Harutyunyan.

Synopsis: Details of the CernVM virtual machine internals and the build process. Being a very lightweight image, CernVM can eliminate the need for a virtual machine image store. The use of the CernVM-FS versioning features facilitates long-term data preservation since a previously defined data processing environment can be re-created.

Synopsis: Overview of the current status of the Test4Theory project. Overview of planned projects: LHC simulation production jobs, volunteer computing for Blue Brain. Running desktop grids and volunteer clouds detached from the BOINC platform.

Synopsis: Details of the use of content-addressable storage inside CernVM-FS. Details of versioning, replication, and storage management in CernVM-FS. Details of the implementation of a POSIX-compliant file system interface. Details of the CernVM-FS API for custom client application. Use of network resources and client-side fail-over algorithms. Status and limits of uses and scale.